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Updating Your Password and MFA After Migration

This guide walks you through logging into your migrated Microsoft 365 (Office 365) account with your temporary password, changing it to a permanent password, and reconfiguring Multi-Factor Authentication (MFA).

Overview

After your mailbox is migrated to the AIR Microsoft 365 tenant, IT issues you a temporary password. The first time you sign in you will be asked to register Microsoft Authenticator for MFA, add a phone number as a second method, and replace the temporary password with a permanent one. The whole flow takes about ten minutes.

 

Prerequisites
  • A temporary password provided by IT.
  • Access to your mobile device for MFA setup.
  • Microsoft Edge installed on your computer.

Sign in with Temporary Password

  • Open the Microsoft Edge browser.

  • In the upper right corner click the three dots.

  • Click New InPrivate Window.

  • Go to https://portal.office.com.

  • You will see a login screen.

  • Enter your email address (for example, username@company.com) and click Next.

  • Enter the temporary password provided by IT.

 

Set Up MFA for Your New Account

  • You will be taken to the Keep your account secure screen. Click Next.

You will need the Microsoft Authenticator app on your phone.

  • On your mobile device, download the Microsoft Authenticator app:
    • Apple App Store
    • Google Play Store
  • Once installed, the app should look like this.

Note If you already had a Microsoft Authenticator entry from your previous tenant, remove the old one before adding the new AIR account. The next two steps cover this.
  • If you see your old work account in Microsoft Authenticator, find your migrating email address and tap it. Verify the email address, then tap the gear icon in the upper right.

  • Tap Remove account.

  • Tap Continue to confirm the removal.

  • Back on the main screen of Microsoft Authenticator, tap the plus sign in the upper right corner.

  • Pick Work or school account.

  • Tap Scan QR code.

  • The app is now ready to scan.

  • Switch back to your Edge InPrivate window. Scan the QR code shown there with the Microsoft Authenticator app, then click Next.

  • You will get a pop-up in Microsoft Authenticator with the number shown on your computer screen.

  • Type that number on your phone and tap Yes.

  • On your computer you will now see Notification approved.

 

Add a Phone Number as a Second Method

  • Add your phone number for the second MFA method and click Next.

  • You will see Success.

  • You will now get a sign-in request in Microsoft Authenticator.

  • On your phone, enter the number shown in the pop-up and tap Yes.

 

Reset Your Temporary Password

  • Enter the temporary password under Current password, create a new password, enter it under New Password, and confirm it. When complete click Sign in.

Password requirements At least 12 characters, with a mix of uppercase, lowercase, numbers, and symbols. Avoid words tied to your name, the company name, or the season.

 

Get to Your Email

  • You will be brought to Copilot. Click the X in the upper right corner to close it.

  • Access your email via Outlook Online (also called Outlook Web App, or OWA). Click Apps in the upper left corner.

  • Once Apps loads, click Outlook.

  • You now have real-time access to your email.

 

Bookmark for Next Time

If you would like to bookmark this page, here is the direct link:

https://outlook.office.com/mail/

 

Support

If you run into any issues, contact the AIR IT Helpdesk at support@aircontrolconcepts.com or call (757) 317-9090.

 

Version

Date

Notes

1.0

2026-05-22

Migrated to the AIR KB template. Content preserved from the legacy article. Screenshots reflowed.

1.1

2026-05-22

Per-image native sizing applied so small source images are no longer upscaled and blurred.

Questions? Contact the AIR IT Help Desk: support@aircontrolconcepts.com